%0 Journal Article %T Two-machine Flow Shop Scheduling Problem with a Single Server and Equal Processing Times %A Shi ling %A Cheng xue-guang %J Journal of Computations & Modelling %D 2012 %I Scienpress Ltd %X We study the problem of two-machine flow-shop scheduling with a single server and equal processing times, we show that this problem is NP -hard in the strong sense. %U http://www.scienpress.com/Upload/JCM/Vol%202_3_8.pdf